new test cases from Pyrex

tests/errors/se_conddef.pyx

+if x:
+	def h():
+		pass
+_ERRORS = u"""
+/Local/Projects/D/Pyrex/Source/Tests/Errors1/se_conddef.pyx:2:1: def statement not allowed here
+"""

tests/errors/se_mixtabspace.pyx

+def f():
+ a = b # space space
+	c = d # tab
+_ERRORS = u"""
+/Local/Projects/D/Pyrex/Source/Tests/Errors1/se_mixtabspace.pyx:3:0: Mixed use of tabs and spaces
+"""

tests/errors/se_multass.pyx

+def f(obj1a, obj2a, obj3a, obj1b, obj2b, obj3b, obj4b):
+	obj1a, (obj2a, obj3a) = obj1b, (obj2b, obj3b, obj4b)
+
+_ERRORS = u"""
+2:9: Unpacking sequence of wrong size (expected 2, got 3)
+"""

tests/errors/se_nestdef.pyx

+def f():
+	def g():
+		pass
+_ERRORS = u"""
+/Local/Projects/D/Pyrex/Source/Tests/Errors1/se_nestdef.pyx:2:1: def statement not allowed here
+"""